Chalcedonite powders
Chalcedonite powders
Chalcedonite powders are produced by grinding selected, top-quality raw material. The chalcedonite we mine and process is free of contamination by iron compounds. The special properties of the raw material make our powders an excellent filler for plastics, resins and paints.
Chalcedonite powders are also used as an additive for concrete, improving its strength and eliminating alkaline corrosion. Our product range includes Chalcedonite powders in thicknesses of 5, 10, 20 and 36 µm.
Available fractions:
- M100
- M250
Data sheets for all fractions issued on request.
Powder with a granulation of 0-250 µm:
- contains 10% natural pozzolana;
- improves the frost resistance of concrete mixtures;
- introduces a self-cleaning effect in the concrete.
Chalcedonite powder M10:
- contains 60 % natural white pozzolana;
- prevents alkaline corrosion;
- improves the frost resistance of the mixture;
- seals concrete mixes.
The product is packed in big bags.
| PHYSICAL PARAMETRES | Specific density | 2,60 g/cm3 |
|---|---|
| Bulk density | 0,45 – 0,55 g/cm3 |
| Stressed density | 0,60 – 0,65 g/cm3 |
| Loss on roasting LOI (1h 950°C) | 1,37 % |
| Fire resistance PN-EN993-12sP | 173 (1730°C) |
| Granulation D-95 ≤ | 10 μm |
| Granulation D-50 ≤ | 10 μm |
| Optical characteristics L/a/b | 84,16/0,95/4,57 |
| Oil absorbing capacity | 36 g/100 g |
| Water absorbing capacity | 30 g/100 g |
| SPECIFIC SURFACE BET | SBET (m2/g) | Vpores (cm2/g) | rpores (nm) |
|---|---|---|
| 8,51 | 0,048 | 1,09 |
- SBET (m2/g) – specific surface area calculated from the BET equation
- Vpores (cm2/g) – total pore volume
- rpores (nm) – average pore radius